Abstract
The present invention discloses a control scheme for 3D memory IC that includes a master chip and at least one slave chip. The master chip includes a main memory core, a first local timer, an I/O buffer, a first pad and a second pad. The at least one slave chip is stacked with the master chip. Each of the slave chip includes a slave memory core, a second local timer and a third pad. A first TSV is coupled to the first pad and the third pad. A logic control circuit layer includes a logic control circuit and a fourth pad, and the logic control circuit is coupled to the fourth pad. A second TSV is coupled to the second pad and the fourth pad.